1 // Copyright 2017 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "base/containers/vector_buffer.h" 6 7 #include "base/test/copy_only_int.h" 8 #include "base/test/move_only_int.h" 9 #include "testing/gtest/include/gtest/gtest.h" 10 11 namespace base { 12 namespace internal { 13 14 TEST(VectorBuffer, DeletePOD) { 15 constexpr int size = 10; 16 VectorBuffer<int> buffer(size); 17 for (int i = 0; i < size; i++) 18 buffer.begin()[i] = i + 1; 19 20 buffer.DestructRange(buffer.begin(), buffer.end()); 21 22 // Delete should do nothing. 23 for (int i = 0; i < size; i++) 24 EXPECT_EQ(i + 1, buffer.begin()[i]); 25 } 26 27 TEST(VectorBuffer, DeleteMoveOnly) { 28 constexpr int size = 10; 29 VectorBuffer<MoveOnlyInt> buffer(size); 30 for (int i = 0; i < size; i++) 31 new (buffer.begin() + i) MoveOnlyInt(i + 1); 32 33 buffer.DestructRange(buffer.begin(), buffer.end()); 34 35 // Delete should have reset all of the values to 0. 36 for (int i = 0; i < size; i++) 37 EXPECT_EQ(0, buffer.begin()[i].data()); 38 } 39 40 TEST(VectorBuffer, PODMove) { 41 constexpr int size = 10; 42 VectorBuffer<int> dest(size); 43 44 VectorBuffer<int> original(size); 45 for (int i = 0; i < size; i++) 46 original.begin()[i] = i + 1; 47 48 original.MoveRange(original.begin(), original.end(), dest.begin()); 49 for (int i = 0; i < size; i++) 50 EXPECT_EQ(i + 1, dest.begin()[i]); 51 } 52 53 TEST(VectorBuffer, MovableMove) { 54 constexpr int size = 10; 55 VectorBuffer<MoveOnlyInt> dest(size); 56 57 VectorBuffer<MoveOnlyInt> original(size); 58 for (int i = 0; i < size; i++) 59 new (original.begin() + i) MoveOnlyInt(i + 1); 60 61 original.MoveRange(original.begin(), original.end(), dest.begin()); 62 63 // Moving from a MoveOnlyInt resets to 0. 64 for (int i = 0; i < size; i++) { 65 EXPECT_EQ(0, original.begin()[i].data()); 66 EXPECT_EQ(i + 1, dest.begin()[i].data()); 67 } 68 } 69 70 TEST(VectorBuffer, CopyToMove) { 71 constexpr int size = 10; 72 VectorBuffer<CopyOnlyInt> dest(size); 73 74 VectorBuffer<CopyOnlyInt> original(size); 75 for (int i = 0; i < size; i++) 76 new (original.begin() + i) CopyOnlyInt(i + 1); 77 78 original.MoveRange(original.begin(), original.end(), dest.begin()); 79 80 // The original should have been destructed, which should reset the value to 81 // 0. Technically this dereferences the destructed object. 82 for (int i = 0; i < size; i++) { 83 EXPECT_EQ(0, original.begin()[i].data()); 84 EXPECT_EQ(i + 1, dest.begin()[i].data()); 85 } 86 } 87 88 } // namespace internal 89 } // namespace base 90
